Shears



wo Model.) I r I r M. G. JOHNSON.

I SHBARS;

No. 244,614. Patented July 19,1881.

. j I lmmnnuuinw N, PEmzs Photo-Ulhognpber. Washington. D. c

L UNITED. STATES PATENT OFFI E.

Moses 0. JOHNSON, or MILFORD, CONNECTICUT.

-SHEARS.

SPECIFICATION forming part of Letters Patent No. 244,614, dated July 19,1881.

' Application filed October 9, 1880. (No model.)

- the wear of shear-blades and keeping the cutting-edges as nearlycoincident as possible.

To this end the invention consists in the combination, with twoshear-blades and the pivot connecting them, one of said blades having inrear of said pivot a screw-threadedhole counterbored upon the inner sideof the blade, of a plug or saddle of metal in said counterbore, and ascrew fitting said screw-threaded hole and serving .to press the plug orsaddle against the opposite-blade, and thereby bring the cutting-edgesof the blade coincident.

In the accompanying drawings, Figurel represents a side view of a pairof shears embodying my invention. Fig. 2 represents an edge viewthereof; and Fig.3 represents 'a transverse section upon the dotted linew a, Fig. 1.

Similar .letters of reference designate corresponding parts in all thefigures.

Although I have only shown my invention A projecting outward in oppositedirections.

B designates the blades, which are pivoted together by a pin or pivot,11, and have armstakin g up wear.

In one blade,in rear of the pivot 11, is formed a screw-threaded hole,cl, in which is fitted a screw, D. The hole cl is counterbored upon theinner side of the blade, and in said counterbore is'fitted a plug orsaddle, E, of any suitable material-such, for instance, as Bab- .bittmetalwhich, by turning said screw D inward, may be made to press uponthe inner surface of the opposite blade, thus distributing the pressureof the screw 1) upon a large surface and keeping the cutting-edges ofthe two blades coincident; When it is found that by reason of wear theshears are defective the defeet may be remedied by simply setting up thescrew D.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination, with the blades B B and their pivot 11, one of saidblades having a screwthreaded hole, d, and a counterbore upon its innerside, of the tightening-screw D and the plug or saddle E, substantiallyas specified.

MOSES (l. JOHNSON. Witnesses:

FRANK W. Bnnns, ALFRED B. BEERS.

